ndertale Yellow is a role-playing game that employs similar gameplay mechanics to Undertale. The player controls a human child and explores the Underground, a vast subterranean landscape where they must battle monsters and solve puzzles to progress. Alongside familiar locations and characters from its predecessor, the game introduces many original areas and monsters. In combat, players are given the choice to defeat monsters through violence or pacifism. Choices made by the player both inside and outside of combat determine the game's story progression, tone, and difficulty, with Undertale Yellow employing a comparable theme of morality to Undertale.
